PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 100%

This chart shows the annual and cumulative numbers of protein sequences in released PDB structures. The chart can be viewed for a few different levels of sequence identity since the beginning of the PDB archive. The cumulative bars represent the growth in unique protein sequences (number of polymeric entities) across history. The yearly bars (dark blue) tell how many new protein sequences were added in a certain year.

Note: The total number of sequence clusters in the statistics table is linked to the sequence cluster group search result page. There is a default precision threshold in calculating the numbers for performance balance. So the statistics count may have a slight discrepancy compared to the actual non-redundant group search result when the result count approaches or goes above 10,000. The group search result page provides an accurate count. The statistics page provides the trend.

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Sequence cluster level:

YearNumber of New Protein SequencesTotal Number of Protein Sequences
19761313
19771427
1978330
1979636
1980440
19811050
19821969
19831483
19841295
198510105
19869114
198710124
198842166
198948214
199077291
1991103394
199288482
1993376858
19947111,569
19955222,091
19965852,676
19978053,481
199811674,648
199913596,007
200014997,506
200115789,084
2002163910,723
2003229513,018
2004305316,071
2005323819,309
2006377323,082
2007436827,450
2008406731,517
2009427835,795
2010446640,261
2011437444,635
2012459149,226
2013514554,371
2014602960,400
2015528965,689
2016610171,790
2017631878,108
2018614184,249
2019694091,189
2020815099,339
20217458106,797
20228853115,650
20238610124,260
20243342127,602